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3 years ago

Mass of nitrogen 14?

Chemistry

2 answers:

poizon [28]3 years ago

7 0

The average atomic mass of N2 (nitrogen) is 14.0067

So I'd say yes?

Troyanec [42]3 years ago

6 0

The average atomic mass of N2 is 14.0067. The atomic masses of the 2 stable isotopes of nitrogen, N-14 and N-15, are14.003074002 and 15.00010897 amu, respectively. Calculate the percent abundance of each nitrogen isotope. Ex.: The average atomic weight of copper is 63.5amu .

hope this helps!!!

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Is this a correct electron config?

lina2011 [118]

Yes, hope this helped!

3 0

3 years ago

What is the percentage by mass of sulphur in Al2(SO4)3[A12SO4 =<br>342g/mol, S = 32]

valentinak56 [21]

Answer: The percentage by mass of sulphur in $Al_2(SO_4)_3$ is 9.36%

Explanation:

Mass percent of an element is the ratio of mass of that element by the total mass expressed in terms of percentage.

${\text {Mass percentage}}=\frac{\text {mass of sulphur}}{\text {Total mass}}\times 100\%$

Given: mass of sulphur = 32 g/mol

mass of $Al_2(SO_4)_3$ = 342 g/mol

Putting in the values we get:

${\text {Mass percentage}}=\frac{32g/mol}{342g/mol}\times 100\%=9.36\%$

The percentage by mass of sulphur in $Al_2(SO_4)_3$ is 9.36%

4 0

3 years ago

A given mass of oxygen occupies 500 ml when the

matrenka [14]

Ok we can use boyle’s law (stating that P is proportional to V) to make the equation (P1V1) =(P2V2).
once we’ve done this, we can plug in the numbers:
(800•500) = (200•V2)
and then we get that
V2= 2000 ml

hope this helps!! :)

5 0

4 years ago

Which electron dot diagram represents H2?

Marizza181 [45]

Answer:

H:H

Explanation:

7 0

3 years ago

Saftey goggles are worn in the lab-

Harrizon [31]

Answer:

Yes

Explanation:

Is this a question or what?

4 0

3 years ago